MG84FL54BD MEGAWIN [Megawin Technology Co., Ltd], MG84FL54BD Datasheet - Page 42
MG84FL54BD
Manufacturer Part Number
MG84FL54BD
Description
Full-Speed USB micro-controller
Manufacturer
MEGAWIN [Megawin Technology Co., Ltd]
Datasheet
1.MG84FL54BD.pdf
(94 pages)
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15.2. Sample Code for Wake-up from Power-down
Note: /INT0 is used in this example.
;******************************************************************************************
; Wake-up-from-power-down by /INT0 interrupt
;******************************************************************************************
INT0
EA
EX0
;
IE0_isr:
;
start:
Resume_operation:
;
42
BIT
BIT
BIT
CSEG
JMP
CSEG
JMP
CLR
;... do something
;...
RETI
;...
;...
SETB
CLR
SETB
SETB
SETB
ORL
NOP
;If /INT0 is triggered by a falling-edge, the MCU will wake up, enter "IE0_isr",
;and then return here to run continuously !
;...
;...
0B2H
0AFH
0A8H
AT
start
AT
IE0_isr
EX0
INT0
IE0
IT0
EA
EX0
PCON,#02h
0000h
0003h
;P3.2
;IE.7
;IE.0
;/INT0 interrupt vector, address=0003h
;pull high P3.2
;clear /INT0 interrupt flag
;may select falling-edge/low-level triggered
;enable global interrupt
;enable /INT0 interrupt
;put MCU into power-down mode
;! Note: here must be a NOP
MG84FL54B Data Sheet
MEGAWIN
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